Jimmy Yacabonis

The 25-year-old righty has one of the better arms in Baltimore's system, but Yacabonis' 2017 season was a study in velocity being just one part of a successful pitcher's arsenal. Yacabonis was able to use his 95 mph fastball to overpower batters at Triple-A Norfolk, notching a 0.90 ERA to go with a 1.03 WHIP to earn his first callup to the majors. There were signs that Yacabonis would not have a smooth transition, however, and indeed he did not. His K/9 at Triple-A was already low for a high-velocity pitcher (7.1), and Yacabonis' inability to miss bats became glaring upon his promotion. He also struggled mightily with walks. Yacabonis stands a strong chance to break camp with the Orioles, but Baltimore's depth in terms of proven high-leverage options will likely result in him seeing a middle-relief role with very little chance to contribute in saves.